I currently run the following specs:
AMD 64 3000+ (Overclocked to 2.2ghz)
1gb RAM
Radeon 9800pro
Recently ive been getting loads of artifacts (on every game now) at default clocks on my gpu.
I cant afford to get a whole new computer, so i was looking to upgrade my graphics card to a Radeon X1600PRO or XT, and i was wondering wether it was worth the upgrade from my 9800pro, or wether i should wait for a year or so and get a whole new system
Any opinions welcome

